FreezinRafiki
Cold enough for ya?
- Joined
- Apr 16, 2009
- Messages
- 6,220
Ah, back to being pitch dark while driving into work in the morning. I was actually making some headway with some light until DST showed up.
I've got an engineering question for you fellas. My 3rd grade son has a school project where the object is to make a water bottle roll down a ramp as slowly as possible, while still continuing to move forward. We can modify the bottle inside and out, but the shape must remain the same. I was thinking about glueing some shag carpet to the outside to create more friction. Any other ideas?
I've got an engineering question for you fellas. My 3rd grade son has a school project where the object is to make a water bottle roll down a ramp as slowly as possible, while still continuing to move forward. We can modify the bottle inside and out, but the shape must remain the same. I was thinking about glueing some shag carpet to the outside to create more friction. Any other ideas?
But I think if I get the jist from my wife, who is the Chemist, the inertia of the bottle is decreased by the water, or something like that. She said not to fill the bottle all the way up with water. <shrug>





